#!/bin/bash


# "go away or i'll replace you with a very small shell script"

cd /root/scripts/gxp2020ext

if ! [ -f "oldnames.txt" ]; then
        touch "oldnames.txt"
fi

EMAIL_TO="gopher@example.com"
EMAIL_FROM="noreply@example.com"
EMAIL_SUBJECT="Company Directory Updated"
SMTP_SERVER="10.0.0.10"

getdate() {
        mydate="$(printf '%(%a, %-e %b %Y %H:%M:%S %z)T\n' -1 2>/dev/null)"
        if [ -z "$mydate" ]; then
                mydate="$(date +'%a, %-e %b %Y %H:%M:%S %z')"
        fi
        echo "$mydate"
}
email() {
        exec 3<>/dev/tcp/$SMTP_SERVER/25

        read -t30 response <&3
    if [ "${response:0:4}" != "220 " ]; then
        echo "$SMTP_SERVER did not respond with banner in time" >&2
        exit 1
    fi
    echo "HELO elastix" >&3
        read -t30 response <&3
    if [ "${response:0:4}" != "250 " ]; then
        echo "$SMTP_SERVER did not accept HELO" >&2
        exit 1
    fi
    echo "MAIL FROM: <$EMAIL_FROM>" >&3
        read -t30 response <&3
    if [ "${response:0:4}" != "250 " ]; then
        echo "$SMTP_SERVER did not accept MAIL FROM address" >&2
        exit 1
    fi
    echo "RCPT TO: <$EMAIL_TO>" >&3
        read -t30 response <&3
    if [ "${response:0:4}" != "250 " ]; then
        echo "$SMTP_SERVER did not accept RCTP TO" >&2
        exit 1
    fi
    echo "DATA" >&3
        read -t30 response <&3
    if [ "${response:0:4}" != "354 " ]; then
        echo "$SMTP_SERVER did not accept envelope" >&2
        exit 1
    fi
    echo "To: <$EMAIL_TO>" >&3
        echo "From: Elastix server <$EMAIL_FROM>" >&3
    echo "Date: $(getdate)" >&3
        echo "Subject: $EMAIL_SUBJECT" >&3
        #echo "" >&3
    cat >&3
    echo -e "\n." >&3
    read -t30 response <&3
    if [ "${response:0:4}" != "250 " ]; then
        echo "$SMTP_SERVER did not accept message body" >&2
        exit 1
    fi
        echo "QUIT" >&3
        while read -t 10 line <&3
    do
        sleep 0
        #echo "$line"
    done
    exec 3>&-
}


./list_names.sh >names.txt

diff oldnames.txt names.txt >/dev/null
if [ "$?" ==  "0" ]; then
        exit 0
fi

if [ -f "template.pdf" ]; then
        rm "template.pdf"
fi

./list_names.sh |awk 'BEGIN { FS = "<" }; {print $1}' |./make_template.sh

if ! [ -f "template.pdf" ]; then
        echo -e "\nWarning, could not create template.pdf on Elastix server" |email
        exit 1
fi

cat names.txt |./provision_gxp2020ext.sh "10.0.0.152"

# Human friendly description of changes
changes="$(diff names.txt oldnames.txt |sed 's/^</Added/1' |sed 's/^>/Removed/1' |grep -e "^A\|^R" |grep -ve "^Added $" |grep -ve "^Removed $")"

cat <<EOF |email
MIME-Version: 1.0
Content-Type: multipart/mixed;
 boundary="------------362711A769942E99400F7B04"

This is a multi-part message in MIME format.
--------------362711A769942E99400F7B04
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit

The company phone directory has been updated.

The lobby phone has been programmed to reflect
the changes.

Please print, cut, and replace the name insert
attached in this email.

Summary of changes:

$(echo "$changes")


--------------362711A769942E99400F7B04
Content-Type: application/pdf;
 name="gxp2020ext_template.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
 filename="gxp2020ext_template.pdf"

$(base64 template.pdf)
--------------362711A769942E99400F7B04--
EOF

mv names.txt oldnames.txt